Hi, and welcome to this pattern file handling section. In this video I will go into discuss you about how to open a file, what are the file modes, what are the file object attributes, how to close a file, how to perform read operation, how to perform write operation and many more things. Before starting this tutorial, you should you have to install this two things pattern and one pattern Id like idol or pi charm. What is file basically definitional file is file is a normal location on system storage, which records data for later access. It enables persistent storage and unknown volatile like in hard disk volatile memory means like ram which can release all the values when you turn off the computer. Why it is so important to learn file handling as it is interesting topic for programmers as well as automation testers as both of them needs to work this file handling either to write a file or read from it as I operation are costly operation, so, this need to be careful to perform it.

What are the types of files? There are two types of file, txt file and binary file. txt files are the structure as a sequence of line where each lens includes sequence of characters Each line is terminated with a special character known as e o l and offline, which tells the interpreter that the line is one old line is completed and new line will be start. backslash corrector can be used to tell interpreter about about next character. What are the binary fights when real files are processed by application. And one of the important points to mention is there is no need for importing external library to to perform READ WRITE, Operation pattern provides inbuilt function for creating, writing and reading files.

Now, I am going to Discuss you about file handling process. Suppose if you want to read a file, first operation will be to open a file, then you second operation read a file and then close the file. But in case if you want to write a file, you perform an open file, then write file and then close file. Suppose, you want to write a file which is not present and that directory by using write, file matter, right mode, new file is created automatically. These are some open modes. There are total 12 modes present in file handling in Python R is used to open a file in read only mode while the file options stays at the root RV.

It opens. densifying in binary plus read only modes and the opposite remains at the root level are Plus, it opens the file in both read as well as write modes. While the file opposite is again at the root level are we plus it opens a file read plus right plus binary modes, the file opposite is again at the root level. Now, for right mod W, it allows right level access to a file. If the file already exists, then it will overwrite it. If it is not, it will create a new file at the same does not exist.

As I told you before, the loop B, use it to open a file for writing in a binary format. Same behavior as for write only mode, w plus it opens a file in both read plus write mode. Same behavior as for write only mode, wb plus mode, it opens a file READ WRITE binary modes same behavior as for write only mode, a appending method this all follows will be appending operation, it opens a file in append mode, the opposite goes to the end of the file. If the file does not exist, then it gets created. AB it opens a file and append plus band remotes same B as for append a plus it opens a file, append plus read mode, same behavior as for append mode, ab plus, it opens a file and f1 plus rate plus binary modes same behavior as for f1 mode. So, and my next video I will discuss you how to perform first open operation then I will start telling you about how to treat file then how to write a file.

How to do perform append operation, and so on. So, for too long, keep learning keep growing and love Python.